Ionia Weather Forecast

    • 59
    • 71

    Rain Showers

    • 59
    • 77

    Chance Rain Showers

    • 59
    • 76

    Mostly Cloudy

    • 61
    • 80

    Partly Sunny

    • 68
    • 85

    Partly Sunny

    • 72
    • 89

    Chance Thunderstorms

    • 73
    • 92

    Chance Thunderstorms

Today 25 Jun Ontario

Showers with a chance of Thunderstorms. Highs Ranging from the upper 60s on the Hilltops to the lower 70s across the lower Elevations. South Winds 10 Mph or Less, becoming southeast. Chance of rain 90 percent.

Tonight 25 Jun Ontario

Showers with a chance of Thunderstorms Early, then mostly cloudy with a chance of Showers and Thunderstorms late this evening. Partly cloudy after midnight. Lows in the upper 50s. Southwest Winds 5 to 10 Mph. Chance of rain near 100 percent.

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Ionia Temperature Statistics

June Temperature

Rochester, Greater Rochester International Airport (15.5 miles)

  • Lowest 2 June, 2026

    43.6 °F

  • Average June

    67.9 °F

  • Highest 11 June, 2026

    91.7 °F

Climate (2021–2026)

Rochester, Greater Rochester International Airport (15.5 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.5 °F
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